Pasting device.



'PATENTED APR. 16, 1907.

E mm O R H U L MGI mm TT n S A m L 'lNVE/VTOR.

' 6.; ATTORNEY 5.1 I emu u zrrnn srnrns SYLVANITS T. )lURCI-IIE, OFKAUKA'UNA, WISCONSIN, ASSIGNOR TO UNION PATENT oFFron BAG 8: PAPERCOMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORA- TION OF NEW JERSEY.

PASTING DEVICE.

Specification of Letters Patent.

' Patented April l6, 1907.

Application filed January 21,1903- Serial No. 139,896.

To all who/it it uuty concern:

Be it known that l, SYLVANUS T. MURCHIE, 'a citizen of the United Statesof America, re

siding in Kaukauna, county of Outagamie, 1n the State. of 1800118111,have invented a certain. new and useful Improvement in Pasting Devices,of which the following is a true and exact description, reference beinghad to the accompanying drawings, which form apart thereof. 4 Myinvention relates to pasting devices for applying paste to webs of paperpreparatory to converting them into tubes, and is especially adapted foruse in connection with fmechanism for making paper bags.

lnbsig-malnng machinery particularly 1t is necessary that forming thetube from which the bag-blanks are cut a strong and even line of pasteshould be applied to the edge of the web of paper which is to form withthe lapped opposite edge the seam of'the tube. Heretofore the generallyused pasting device has consisted of a paste-disk running 1n contactwith the web and rotated by friction therewith, the lower edge of the.disk

, running in a paste-trough and a scraper being provided to prevent anundue quantity of paste, and particularly lumps of paste, from beingcarried up to the point of contact with the web. This device has provedtrouble some and ineffective in many respects, no-

tably because of the choking of the scraper by lumps of paste whichresults'in practically stripping the disk of paste before it comes incontact with the web and sometimes in stopping or retarding the motionof the disk, which in the old plan is driven by friction with the web.Again, the disk in the old construction efi'ects practically no stirringof the paste'in the trough,and to keep the paste of proper consistencyand prevent the formation of a partially-dried scum .on the top ofthe'paste it is necessary that the machinetender should frequently stirthe paste; but

this is aduty which is in practice much neglected. Again, thepaste-trough in the old construction is by reason of its necessarysituation of limited capacity and requires refilling, generally severaltimes, during a-days run, and this dutyis frequently overlooked by themachine-tender.

j The object of my invention is to provide a pasting device which willbe free'from the i above-noted defects of the older devices, and l myinvention consists in providing a pastebox havinga rotatingsprocket-wheel situated above it and a sprocket chain passing over saidwheel and depending into the pastebox; further, in providing apaste-disk run-, hingin contact with the web of paper and in suchproximity with the chain as to receive paste from it. Thesprocket-cl1ainfor the "best results should pass over a guide,preferbottom of'the paste-box and should be posidrive the paste-disk infixed relation to the movement of the chain.

which illustrate my invention, and in whichv Figure 1 1s a sideelevationof a portion of a tube-forming .mechanisni including the planview'of-the mechanism shown in Fig. 1.

A is the frame-of the machine B B, brackets supporting the journals ofthe roller C, on

which is wound the paper-roll K. i i

C and'C are guide-rolls over which the web K of paper is led to thetube-formin mechanism, of which only a preliminaryrol D and the finalpressing-rolls E E are shown, as such mechanism forms no part of myinvention. At K I show a bellows-folded tube issuing from the rolls E Eand having a pasted seam, (indicated at K F is a paste-box havinga-table F situated above it, with openings f 2 and F for the passage ofthe sprocket-chain. As shown, bears ings F F and F F are secured to thetable F, and bearing-brackets F are secured to the bottom of the box.

F is a bracket supporting a scraper I.

G is a shaft supported in bearings F F and having secured to it thesprocket-wheel G and also a gear-whcel G wheel G and depending into. thepaste-box F, wherein, as shown, it passes around a guide sprocket-wheel9 supported on a shaft G, running in the bearing-brackets F H is ashaftsupported in bearings F F and carrying the paste-disk H and gearwheel Hwhich is engaged with gear G, as shown, and-which also engagesagear-wheel :c on the shaft of roll '0 ably another sprocket-wheel,situated in the pasting device, the elevation being taken onthesection-line l l'of Fig. 2; and Flg. 2 s atively driven, and I preferalso to positively V Reference is now had to the drawings,

G is a sprocket-chain passing over sprocket 10 5 The gears G and i IIshould be driven by positively-acting mechanism, which can be connectedtherei with in any convenient way. It is not essen- 1 tial that the rollC should be positively E driven, and, indeed, it is not absolutelynecessary that the disk H should be coupled with shaft G or otherwisepositively driven.

In operation the paper is drawn forward over rolls C and C the edge ofthe web running between roll C and paste-disk H. The i positively-drivensprocket-chain G running f in the paste-box, keeps the paste thereinwell I stirred up and passes over the sprocket G well covered by paste,which 1s imparted freely to the paste-disk H- and by it to the web ofpaper, surpluspaste being scraped from the disk by scraper I.

It will be obvious that the position of the paste-box enables me to makeit of such size as to hold at least a full days supply of paste and thatthe constant agitation of the paste. will result in preventing theformation of lumps or scum to an injurious extent, while I thepaste-disk is also by removal from the box prevented from carrying upwith it i lumpy or tough portions which would tend to clog its scraper.

As the shafts 'G and H are side by side in the same horizontal plane,the portion of the 1 chain passing in close proximity to' the pe: 1riphery of the paste-disk and from which the latter receives, pasteextends vertically in the line of the common tangent to the l paste-diskand the wheel G In consequence of this arrangement the chain andpaste-disk do not cooperate to form a reguiding a Web of paper includinga roll over which the web passes, a paste-box, a rotating sprocket-wheelseated above the pastebox, a sprocket-chain passing around saidsprocket-wheel and depending into the pastetrough, and a rotatingpaste-a ')plying disk for applying a line of paste to the web as itpasses around-said roll, geared to rotate positively with saidsprocket-wheel, and having its periphery passing in close proximity toand receiving paste from a vertical portion of said chain.

2. In combination with mechanism for guiding a web of paper, including aroll over which the web passes, a rotating paste-applying disk operating'to apply a line of paste to the web asit passes around said roll, a

paste-box, a rotating sprocket-wheel situated above said box and havingits axis parallelto and in the same horizontal plane with the axis ofsaid disk, and a sprocket- 'chain passing over said sprocket-wheel anddepending-vertically into said paste-box, a vertical portion of saidsprocket-chain pass-- ing close to the paste-disk so as to supply itwith paste.

SYLVANUS T'. MURCHIE. Witnesses:

' G. H. DAWSON,

Tnos. A. CLANCY.

